Apple lawyers on Thursday closed their arguments in a federal antitrust trial with fierce warnings that a guilty verdict would sends chills across the internet industry, The Washington Post reports. After three weeks defending Apple against Justice Department charges that it led an e-books price-fixing conspiracy, the company’s attorney said Apple acted legally when it aggressively pursued business deals with publishers. “The government is taking perfectly sensible business agreements to infer sinister conduct,” Apple attorney Orin Snyder of Gibson Dunn said in his closing remarks at U.S. District Court in Manhattan…